Assel轧管机轧制薄壁Φ70mm×3mm合金结构钢管工艺研究和辊型改进  

Study on Process and Improvement of Roll Shape for Rolling Thin-WalledΦ70 mm×3 mm Alloy Steel Seamless Tube by Assel Mill

作　　者：袁方成 马金辉 黎福华 

机构地区：[1]湖北新冶钢有限公司钢管事业部,黄石435001

出　　处：《特殊钢》2013年第2期23-27,共5页Special Steel

摘　　要：现场实验研究了Assel轧机轧制过程减径量、减壁量、牌坊转角、钢管径壁比(d/t)和转速对20Cr钢管扩径量(Δd)、壁厚不均匀度(Δt)和轴向滑移系数(η_o)的影响。设计了轧制Φ70 mm×3 mm 20Cr钢管的辊型。工业生产结果表明,毛管尺寸为Φ76.3～76.7 mm×7.89～8.36 mm,Assel轧机轧制参数为喉径58 mm,芯棒52mm.转角15°,转速200 r/min时可轧出符合标准要求的Φ70 mm×3 mm的20Cr钢管。The effect of reduction of diameter, reduction of wall thickness, feed angle, tube diameter/wall thickness （d/t） and rotating speed of roll on diameter expanding amount （ Ad）, degree of non-homogeneous wall thickness （At） and axial slide factor （ ηo ） for rolling steel 20Cr tube is studied during Assel mill rolling process. The roll shape for roiling Ф70 mm × 3 mm 20Cr steel tube is designed. Commercial production results show that with Ф76. 3 - 76. 6 mm × 7. 89 N 8.36 mm shell, Assel mill rolling parametersthroat diameter 58 mm, mandrel diameter 52 mm, feed angle 15°, rotating speed 200 r/min the rolled Ф70 mm × 3 mm 20Cr steel tube meets the requirement of standard.

关 键 词：ASSEL轧管机 合金结构钢 Φ70mm×3mm钢管 轧制参数 辊型优化设计 

分 类 号：TG333.8[金属学及工艺—金属压力加工]